DESIGN OF REFLECTIONLESS ABSORBERS FOR MICROWAVE AND THz BANDS BASED ON METAMATERIALS
Application
Absorbing materials and innovative coatings without a reflective basis and “invisible” on their irradiated sides for microwave and THz equipment.
Description
The options for creating low-reflection metamaterial absorber (in microwave and THz bands) consisting of rectangular omega-elements have been suggested. Near the resonant frequency, such samples show strong absorption and a reflection coefficient close to zero. In this case the reflectionless absorber properties occur in a wide bandwidth. The reason for such a property of the samples is the balance of the electric dipole moment and the magnetic moment of each element and the optimality of its parameters. As a result, the absorber has wave impedance equal to the impedance of the free space.
Implementation level
Metamaterial samples consisting of rectangular omega-resonators with calculated optimal parameters have been made. Templates have been produced and the replication technology of rectangular omega elements has been developed. Experimental studies with manufactured samples in the microwave range have been carried out.
Anechoic chamber at Francisk Skorina Gomel State University
Igor Semchenko,
Head of Research Laboratory «Physics of wave processes»,
Doctor of Physical and Mathematical Sciences, Professor
tel. +(375 232) 60-74-10, fax +(375 232) 60-30-02,
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